ICU release 68 changed their usage of primitive types, and removed the TRUE and FALSE defines as outlined here: https://github.com/unicode-org/icu/blob/master/docs/userguide/dev/codingguidelines.md#primitive-types
You’ll probably need to patch Gui in some way. For Base I simply defined TRUE/FALSE in GSICUString.h: https://github.com/gnustep/libs-base/pull/163 Frederik > Am 21.12.2020 um 11:00 schrieb Riccardo Mottola <riccardo.mott...@libero.it>: > > Hi all! > > gui stopped compiling for me on Linux/Gentoo. > I guess it comes from Unicode issues: > > Compiling file GSCharacterPanel.m ... > GSCharacterPanel.m: In function 'enumCharNamesFn': > GSCharacterPanel.m:81:10: error: 'TRUE' undeclared (first use in this > function) > 81 | return TRUE; > | ^~~~ > GSCharacterPanel.m:81:10: note: each undeclared identifier is reported > only once for each function it appears in > GSCharacterPanel.m: In function 'searchCharNamesFn': > GSCharacterPanel.m:106:10: error: 'TRUE' undeclared (first use in this > function) > 106 | return TRUE; > | ^~~~ > > > > I don't see any significant change in the code though, so my fear is > that it comes from a new version of libicu? > I cheched and I have 68.1 installed. > > What version(s) do you have? does gui still correctly build? > > Riccardo >